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[Chemical Knowledge]：What are the upstream raw materials of phosphorus chemical industry? What do the downstream products contain?

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Phosphorus chemicals is a broad field that covers everything from the extraction of phosphate rock to the production of final products. In this industry chain, there are many upstream and downstream related products. The following are some of the main phosphorus chemical upstream and downstream related products.

1. upstream product

(1) phosphate rock: phosphate chemical raw materials are mainly phosphate rock, which contains phosphorus pentoxide (P2O5). The mining and processing of phosphate rock is the foundation of the whole phosphorus chemical industry chain.

(2) Sulfuric acid: Sulfuric acid is mainly used as raw material for the production of phosphate fertilizer and phosphoric acid in phosphorus chemical industry. The reaction of sulfuric acid and phosphate rock can produce phosphoric acid.

(3) Natural gas: In some processes, natural gas is used as an energy source and raw material for the production of phosphorus chemical products.

2. Downstream product

(1) Phosphate fertilizer: Phosphate fertilizer is one of the main downstream products of phosphorus chemical industry, which is used to increase the phosphorus content of soil and promote plant growth. Common phosphate fertilizers include calcium superphosphate, diammonium phosphate, etc.

(2) phosphoric acid: phosphoric acid is an important intermediate product of phosphorus chemical industry, widely used in food, medicine, fertilizer and other industries. In addition, phosphoric acid can also be used to produce phosphates and other phosphorus compounds.

(3) Phosphates: Phosphates are a broad class of compounds used in a variety of industrial applications. For example, sodium tripolyphosphate is used as a food additive and detergent, and sodium hexametaphosphate is used as a water treatment agent and metal preservative.

(4) Yellow phosphorus: Yellow phosphorus is an important phosphorus compound used in the production of thermal phosphoric acid, phosphorus trichloride, etc. At the same time, yellow phosphorus can also be used for military purposes such as making incendiary bombs and smoke bombs.

In short, the upstream and downstream related products of phosphorus chemical industry are very extensive and involve many fields. With the continuous progress of science and technology, the application field of phosphorus chemical products will continue to expand.

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